2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1992, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/param.h>
48 #include <sys/linker.h>
49 #include <sys/module.h>
50 #include <sys/mount.h>
51 #include <sys/socket.h>
53 #include <sys/syslog.h>
57 #include <rpc/pmap_clnt.h>
58 #include <rpc/pmap_prot.h>
59 #include <rpcsvc/nfs_prot.h>
60 #include <rpcsvc/mount.h>
62 #include <nfsclient/nfs.h>
64 #include <arpa/inet.h>
81 /* Table for af,sotype -> netid conversions. */
87 {"udp", AF_INET, SOCK_DGRAM},
88 {"tcp", AF_INET, SOCK_STREAM},
89 {"udp6", AF_INET6, SOCK_DGRAM},
90 {"tcp6", AF_INET6, SOCK_STREAM},
99 u_char nfh[NFS3_FHSIZE];
107 int nfsproto = IPPROTO_TCP;
110 char *portspec = NULL; /* Server nfs port; NULL means look up via rpcbind. */
111 struct sockaddr *addr;
116 int got_principal = 0;
125 /* Return codes for nfs_tryproto. */
128 TRYRET_TIMEOUT, /* No response received. */
129 TRYRET_REMOTEERR, /* Error received from remote server. */
130 TRYRET_LOCALERR /* Local failure. */
133 static int fallback_mount(struct iovec *iov, int iovlen, int mntflags);
134 static int sec_name_to_num(char *sec);
135 static char *sec_num_to_name(int num);
136 static int getnfsargs(char *, struct iovec **iov, int *iovlen);
137 /* void set_rpc_maxgrouplist(int); */
138 static struct netconfig *getnetconf_cached(const char *netid);
139 static const char *netidbytype(int af, int sotype);
140 static void usage(void) __dead2;
141 static int xdr_dir(XDR *, char *);
142 static int xdr_fh(XDR *, struct nfhret *);
143 static enum tryret nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec,
144 char **errstr, struct iovec **iov, int *iovlen);
145 static enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
148 main(int argc, char *argv[])
152 int mntflags, num, iovlen;
154 char *name, *p, *spec, *fstype;
155 char mntpath[MAXPATHLEN], errmsg[255];
156 char hostname[MAXHOSTNAMELEN + 1], *gssname, gssn[MAXHOSTNAMELEN + 50];
161 memset(errmsg, 0, sizeof(errmsg));
164 fstype = strrchr(argv[0], '_');
166 errx(EX_USAGE, "argv[0] must end in _fstype");
170 while ((c = getopt(argc, argv,
171 "23a:bcdD:g:I:iLlNo:PR:r:sTt:w:x:U")) != -1)
180 printf("-a deprecated, use -o readahead=<value>\n");
181 build_iovec(&iov, &iovlen, "readahead", optarg, (size_t)-1);
187 printf("-c deprecated, use -o noconn\n");
188 build_iovec(&iov, &iovlen, "noconn", NULL, 0);
192 printf("-D deprecated, use -o deadthresh=<value>\n");
193 build_iovec(&iov, &iovlen, "deadthresh", optarg, (size_t)-1);
196 printf("-d deprecated, use -o dumbtimer");
197 build_iovec(&iov, &iovlen, "dumbtimer", NULL, 0);
200 printf("-g deprecated, use -o maxgroups");
201 num = strtol(optarg, &p, 10);
203 errx(1, "illegal -g value -- %s", optarg);
204 //set_rpc_maxgrouplist(num);
205 build_iovec(&iov, &iovlen, "maxgroups", optarg, (size_t)-1);
208 printf("-I deprecated, use -o readdirsize=<value>\n");
209 build_iovec(&iov, &iovlen, "readdirsize", optarg, (size_t)-1);
212 printf("-i deprecated, use -o intr\n");
213 build_iovec(&iov, &iovlen, "intr", NULL, 0);
216 printf("-i deprecated, use -o nolockd\n");
217 build_iovec(&iov, &iovlen, "nolockd", NULL, 0);
220 printf("-l deprecated, -o rdirplus\n");
221 build_iovec(&iov, &iovlen, "rdirplus", NULL, 0);
224 printf("-N deprecated, do not specify -o resvport\n");
227 int pass_flag_to_nmount;
231 char *pnextopt = NULL;
233 pass_flag_to_nmount = 1;
234 pnextopt = strchr(opt, ',');
235 if (pnextopt != NULL) {
239 pval = strchr(opt, '=');
244 if (strcmp(opt, "bg") == 0) {
246 pass_flag_to_nmount=0;
247 } else if (strcmp(opt, "fg") == 0) {
248 /* same as not specifying -o bg */
249 pass_flag_to_nmount=0;
250 } else if (strcmp(opt, "gssname") == 0) {
251 pass_flag_to_nmount = 0;
253 } else if (strcmp(opt, "mntudp") == 0) {
255 nfsproto = IPPROTO_UDP;
256 } else if (strcmp(opt, "udp") == 0) {
257 nfsproto = IPPROTO_UDP;
258 } else if (strcmp(opt, "tcp") == 0) {
259 nfsproto = IPPROTO_TCP;
260 } else if (strcmp(opt, "noinet4") == 0) {
261 pass_flag_to_nmount=0;
262 opflags |= OF_NOINET4;
263 } else if (strcmp(opt, "noinet6") == 0) {
264 pass_flag_to_nmount=0;
265 opflags |= OF_NOINET6;
266 } else if (strcmp(opt, "noconn") == 0) {
268 } else if (strcmp(opt, "nfsv2") == 0) {
269 pass_flag_to_nmount=0;
271 } else if (strcmp(opt, "nfsv3") == 0) {
273 } else if (strcmp(opt, "nfsv4") == 0) {
274 pass_flag_to_nmount=0;
277 nfsproto = IPPROTO_TCP;
278 if (portspec == NULL)
280 } else if (strcmp(opt, "port") == 0) {
281 pass_flag_to_nmount=0;
282 asprintf(&portspec, "%d",
284 if (portspec == NULL)
286 } else if (strcmp(opt, "principal") == 0) {
288 } else if (strcmp(opt, "sec") == 0) {
290 * Don't add this option to
291 * the iovec yet - we will
292 * negotiate which sec flavor
293 * to use with the remote
296 pass_flag_to_nmount=0;
297 secflavor = sec_name_to_num(val);
300 "illegal sec value -- %s",
303 } else if (strcmp(opt, "retrycnt") == 0) {
304 pass_flag_to_nmount=0;
305 num = strtol(val, &p, 10);
307 errx(1, "illegal retrycnt value -- %s", val);
309 } else if (strcmp(opt, "maxgroups") == 0) {
310 num = strtol(val, &p, 10);
312 errx(1, "illegal maxgroups value -- %s", val);
313 //set_rpc_maxgrouplist(num);
315 if (pass_flag_to_nmount)
316 build_iovec(&iov, &iovlen, opt, val,
323 /* obsolete for -o noresvport now default */
324 printf("-P deprecated, use -o noresvport\n");
325 build_iovec(&iov, &iovlen, "noresvport", NULL, 0);
328 printf("-R deprecated, use -o retrycnt=<retrycnt>\n");
329 num = strtol(optarg, &p, 10);
331 errx(1, "illegal -R value -- %s", optarg);
335 printf("-r deprecated, use -o rsize=<rsize>\n");
336 build_iovec(&iov, &iovlen, "rsize", optarg, (size_t)-1);
339 printf("-s deprecated, use -o soft\n");
340 build_iovec(&iov, &iovlen, "soft", NULL, 0);
343 nfsproto = IPPROTO_TCP;
344 printf("-T deprecated, use -o tcp\n");
347 printf("-t deprecated, use -o timeout=<value>\n");
348 build_iovec(&iov, &iovlen, "timeout", optarg, (size_t)-1);
351 printf("-w deprecated, use -o wsize=<value>\n");
352 build_iovec(&iov, &iovlen, "wsize", optarg, (size_t)-1);
355 printf("-x deprecated, use -o retrans=<value>\n");
356 build_iovec(&iov, &iovlen, "retrans", optarg, (size_t)-1);
359 printf("-U deprecated, use -o mntudp\n");
361 nfsproto = IPPROTO_UDP;
362 build_iovec(&iov, &iovlen, "mntudp", NULL, 0);
380 /* The default is to keep retrying forever. */
384 * If the experimental nfs subsystem is loaded into the kernel
385 * and the regular one is not, use it. Otherwise, use it if the
386 * fstype is set to "newnfs", either via "mount -t newnfs ..."
387 * or by specifying an nfsv4 mount.
389 if (modfind("nfscl") >= 0 && modfind("nfs") < 0) {
391 } else if (strcmp(fstype, "newnfs") == 0) {
392 if (modfind("nfscl") < 0) {
393 /* Not present in kernel, try loading it */
394 if (kldload("nfscl") < 0 ||
395 modfind("nfscl") < 0)
396 errx(1, "nfscl is not available");
401 * Add the fqdn to the gssname, as required.
403 if (gssname != NULL) {
404 if (strchr(gssname, '@') == NULL &&
405 gethostname(hostname, MAXHOSTNAMELEN) == 0) {
406 snprintf(gssn, sizeof (gssn), "%s@%s", gssname,
410 build_iovec(&iov, &iovlen, "gssname", gssname,
411 strlen(gssname) + 1);
414 if (!getnfsargs(spec, &iov, &iovlen))
417 /* resolve the mountpoint with realpath(3) */
418 (void)checkpath(name, mntpath);
420 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
421 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
422 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
426 * Backwards compatibility routines for older kernels.
427 * Remove this and fallback_mount() code when we do not need to support
428 * NFS mounts against older kernels which still need
429 * struct nfs_args to be passed in via nmount().
431 osversion = getosreldate();
432 if (osversion >= 702100) {
433 if (nmount(iov, iovlen, mntflags))
434 err(1, "%s, %s", mntpath, errmsg);
436 if (fallback_mount(iov, iovlen, mntflags))
437 err(1, "%s, %s", mntpath, errmsg);
444 findopt(struct iovec *iov, int iovlen, const char *name,
445 char **valuep, int *lenp)
449 for (i = 0; i < iovlen/2; i++, iov += 2) {
450 if (strcmp(name, iov[0].iov_base) == 0) {
452 *valuep = iov[1].iov_base;
454 *lenp = iov[1].iov_len;
462 copyopt(struct iovec **newiov, int *newiovlen,
463 struct iovec *iov, int iovlen, const char *name)
468 if (findopt(iov, iovlen, name, &value, &len) == 0)
469 build_iovec(newiov, newiovlen, name, value, len);
473 * XXX: This function is provided for backwards
474 * compatibility with older kernels which did not support
475 * passing NFS mount options to nmount() as individual
476 * parameters. It should be eventually be removed.
479 fallback_mount(struct iovec *iov, int iovlen, int mntflags)
481 struct nfs_args args = {
482 .version = NFS_ARGSVERSION,
484 .addrlen = sizeof (struct sockaddr_in),
485 .sotype = SOCK_STREAM,
489 .flags = NFSMNT_RESVPORT,
492 .readdirsize = NFS_READDIRSIZE,
494 .retrans = NFS_RETRANS,
495 .maxgrouplist = NFS_MAXGRPS,
496 .readahead = NFS_DEFRAHEAD,
497 .wcommitsize = 0, /* was: NQ_DEFLEASE */
498 .deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
501 .acregmin = NFS_MINATTRTIMO,
502 .acregmax = NFS_MAXATTRTIMO,
503 .acdirmin = NFS_MINDIRATTRTIMO,
504 .acdirmax = NFS_MAXDIRATTRTIMO,
508 struct iovec *newiov;
511 if (findopt(iov, iovlen, "dumbtimer", NULL, NULL) == 0)
512 args.flags |= NFSMNT_DUMBTIMR;
513 if (findopt(iov, iovlen, "noconn", NULL, NULL) == 0)
514 args.flags |= NFSMNT_NOCONN;
515 if (findopt(iov, iovlen, "conn", NULL, NULL) == 0)
516 args.flags |= NFSMNT_NOCONN;
517 if (findopt(iov, iovlen, "nolockd", NULL, NULL) == 0)
518 args.flags |= NFSMNT_NOLOCKD;
519 if (findopt(iov, iovlen, "lockd", NULL, NULL) == 0)
520 args.flags &= ~NFSMNT_NOLOCKD;
521 if (findopt(iov, iovlen, "intr", NULL, NULL) == 0)
522 args.flags |= NFSMNT_INT;
523 if (findopt(iov, iovlen, "rdirplus", NULL, NULL) == 0)
524 args.flags |= NFSMNT_RDIRPLUS;
525 if (findopt(iov, iovlen, "resvport", NULL, NULL) == 0)
526 args.flags |= NFSMNT_RESVPORT;
527 if (findopt(iov, iovlen, "noresvport", NULL, NULL) == 0)
528 args.flags &= ~NFSMNT_RESVPORT;
529 if (findopt(iov, iovlen, "soft", NULL, NULL) == 0)
530 args.flags |= NFSMNT_SOFT;
531 if (findopt(iov, iovlen, "hard", NULL, NULL) == 0)
532 args.flags &= ~NFSMNT_SOFT;
533 if (findopt(iov, iovlen, "mntudp", NULL, NULL) == 0)
534 args.sotype = SOCK_DGRAM;
535 if (findopt(iov, iovlen, "udp", NULL, NULL) == 0)
536 args.sotype = SOCK_DGRAM;
537 if (findopt(iov, iovlen, "tcp", NULL, NULL) == 0)
538 args.sotype = SOCK_STREAM;
539 if (findopt(iov, iovlen, "nfsv3", NULL, NULL) == 0)
540 args.flags |= NFSMNT_NFSV3;
541 if (findopt(iov, iovlen, "readdirsize", &opt, NULL) == 0) {
543 errx(1, "illegal readdirsize");
545 ret = sscanf(opt, "%d", &args.readdirsize);
546 if (ret != 1 || args.readdirsize <= 0) {
547 errx(1, "illegal readdirsize: %s", opt);
549 args.flags |= NFSMNT_READDIRSIZE;
551 if (findopt(iov, iovlen, "readahead", &opt, NULL) == 0) {
553 errx(1, "illegal readahead");
555 ret = sscanf(opt, "%d", &args.readahead);
556 if (ret != 1 || args.readahead <= 0) {
557 errx(1, "illegal readahead: %s", opt);
559 args.flags |= NFSMNT_READAHEAD;
561 if (findopt(iov, iovlen, "wsize", &opt, NULL) == 0) {
563 errx(1, "illegal wsize");
565 ret = sscanf(opt, "%d", &args.wsize);
566 if (ret != 1 || args.wsize <= 0) {
567 errx(1, "illegal wsize: %s", opt);
569 args.flags |= NFSMNT_WSIZE;
571 if (findopt(iov, iovlen, "rsize", &opt, NULL) == 0) {
573 errx(1, "illegal rsize");
575 ret = sscanf(opt, "%d", &args.rsize);
576 if (ret != 1 || args.rsize <= 0) {
577 errx(1, "illegal wsize: %s", opt);
579 args.flags |= NFSMNT_RSIZE;
581 if (findopt(iov, iovlen, "retrans", &opt, NULL) == 0) {
583 errx(1, "illegal retrans");
585 ret = sscanf(opt, "%d", &args.retrans);
586 if (ret != 1 || args.retrans <= 0) {
587 errx(1, "illegal retrans: %s", opt);
589 args.flags |= NFSMNT_RETRANS;
591 if (findopt(iov, iovlen, "acregmin", &opt, NULL) == 0) {
592 ret = sscanf(opt, "%d", &args.acregmin);
593 if (ret != 1 || args.acregmin < 0) {
594 errx(1, "illegal acregmin: %s", opt);
596 args.flags |= NFSMNT_ACREGMIN;
598 if (findopt(iov, iovlen, "acregmax", &opt, NULL) == 0) {
599 ret = sscanf(opt, "%d", &args.acregmax);
600 if (ret != 1 || args.acregmax < 0) {
601 errx(1, "illegal acregmax: %s", opt);
603 args.flags |= NFSMNT_ACREGMAX;
605 if (findopt(iov, iovlen, "acdirmin", &opt, NULL) == 0) {
606 ret = sscanf(opt, "%d", &args.acdirmin);
607 if (ret != 1 || args.acdirmin < 0) {
608 errx(1, "illegal acdirmin: %s", opt);
610 args.flags |= NFSMNT_ACDIRMIN;
612 if (findopt(iov, iovlen, "acdirmax", &opt, NULL) == 0) {
613 ret = sscanf(opt, "%d", &args.acdirmax);
614 if (ret != 1 || args.acdirmax < 0) {
615 errx(1, "illegal acdirmax: %s", opt);
617 args.flags |= NFSMNT_ACDIRMAX;
619 if (findopt(iov, iovlen, "deadthresh", &opt, NULL) == 0) {
620 ret = sscanf(opt, "%d", &args.deadthresh);
621 if (ret != 1 || args.deadthresh <= 0) {
622 errx(1, "illegal deadthresh: %s", opt);
624 args.flags |= NFSMNT_DEADTHRESH;
626 if (findopt(iov, iovlen, "timeout", &opt, NULL) == 0) {
627 ret = sscanf(opt, "%d", &args.timeo);
628 if (ret != 1 || args.timeo <= 0) {
629 errx(1, "illegal timeout: %s", opt);
631 args.flags |= NFSMNT_TIMEO;
633 if (findopt(iov, iovlen, "maxgroups", &opt, NULL) == 0) {
634 ret = sscanf(opt, "%d", &args.maxgrouplist);
635 if (ret != 1 || args.timeo <= 0) {
636 errx(1, "illegal maxgroups: %s", opt);
638 args.flags |= NFSMNT_MAXGRPS;
640 if (findopt(iov, iovlen, "addr", &opt,
641 &args.addrlen) == 0) {
642 args.addr = (struct sockaddr *) opt;
644 if (findopt(iov, iovlen, "fh", &opt, &args.fhsize) == 0) {
647 if (findopt(iov, iovlen, "hostname", &args.hostname,
650 if (args.hostname == NULL) {
651 errx(1, "Invalid hostname");
657 build_iovec(&newiov, &newiovlen, "nfs_args", &args, sizeof(args));
658 copyopt(&newiov, &newiovlen, iov, iovlen, "fstype");
659 copyopt(&newiov, &newiovlen, iov, iovlen, "fspath");
660 copyopt(&newiov, &newiovlen, iov, iovlen, "errmsg");
662 return nmount(newiov, newiovlen, mntflags);
666 sec_name_to_num(char *sec)
668 if (!strcmp(sec, "krb5"))
669 return (RPCSEC_GSS_KRB5);
670 if (!strcmp(sec, "krb5i"))
671 return (RPCSEC_GSS_KRB5I);
672 if (!strcmp(sec, "krb5p"))
673 return (RPCSEC_GSS_KRB5P);
674 if (!strcmp(sec, "sys"))
680 sec_num_to_name(int flavor)
683 case RPCSEC_GSS_KRB5:
685 case RPCSEC_GSS_KRB5I:
687 case RPCSEC_GSS_KRB5P:
696 getnfsargs(char *spec, struct iovec **iov, int *iovlen)
698 struct addrinfo hints, *ai_nfs, *ai;
700 int ecode, speclen, remoteerr, offset, have_bracket = 0;
701 char *hostp, *delimp, *errstr;
703 static char nam[MNAMELEN + 1], pname[MAXHOSTNAMELEN + 5];
705 if (*spec == '[' && (delimp = strchr(spec + 1, ']')) != NULL &&
706 *(delimp + 1) == ':') {
710 } else if ((delimp = strrchr(spec, ':')) != NULL) {
713 } else if ((delimp = strrchr(spec, '@')) != NULL) {
714 warnx("path@server syntax is deprecated, use server:path");
717 warnx("no <host>:<dirpath> nfs-name");
723 * If there has been a trailing slash at mounttime it seems
724 * that some mountd implementations fail to remove the mount
725 * entries from their mountlist while unmounting.
727 for (speclen = strlen(spec);
728 speclen > 1 && spec[speclen - 1] == '/';
730 spec[speclen - 1] = '\0';
731 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
732 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
735 /* Make both '@' and ':' notations equal */
736 if (*hostp != '\0') {
741 memmove(nam + offset, hostp, len);
743 nam[len + offset++] = ']';
744 nam[len + offset++] = ':';
745 memmove(nam + len + offset, spec, speclen);
746 nam[len + speclen + offset] = '\0';
750 * Handle an internet host address.
752 memset(&hints, 0, sizeof hints);
753 hints.ai_flags = AI_NUMERICHOST;
754 if (nfsproto == IPPROTO_TCP)
755 hints.ai_socktype = SOCK_STREAM;
756 else if (nfsproto == IPPROTO_UDP)
757 hints.ai_socktype = SOCK_DGRAM;
759 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
760 hints.ai_flags = AI_CANONNAME;
761 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
763 if (portspec == NULL)
764 errx(1, "%s: %s", hostp, gai_strerror(ecode));
766 errx(1, "%s:%s: %s", hostp, portspec,
767 gai_strerror(ecode));
772 * For a Kerberized nfs mount where the "principal"
773 * argument has not been set, add it here.
775 if (got_principal == 0 && secflavor >= 0 &&
776 secflavor != AUTH_SYS && ai_nfs->ai_canonname != NULL) {
777 snprintf(pname, sizeof (pname), "nfs@%s",
778 ai_nfs->ai_canonname);
779 build_iovec(iov, iovlen, "principal", pname,
784 ret = TRYRET_LOCALERR;
787 * Try each entry returned by getaddrinfo(). Note the
788 * occurence of remote errors by setting `remoteerr'.
791 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
792 if ((ai->ai_family == AF_INET6) &&
793 (opflags & OF_NOINET6))
795 if ((ai->ai_family == AF_INET) &&
796 (opflags & OF_NOINET4))
798 ret = nfs_tryproto(ai, hostp, spec, &errstr, iov,
800 if (ret == TRYRET_SUCCESS)
802 if (ret != TRYRET_LOCALERR)
804 if ((opflags & ISBGRND) == 0)
805 fprintf(stderr, "%s\n", errstr);
807 if (ret == TRYRET_SUCCESS)
810 /* Exit if all errors were local. */
815 * If retrycnt == 0, we are to keep retrying forever.
816 * Otherwise decrement it, and exit if it hits zero.
818 if (retrycnt != 0 && --retrycnt == 0)
821 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
822 warnx("Cannot immediately mount %s:%s, backgrounding",
825 if (daemon(0, 0) != 0)
830 freeaddrinfo(ai_nfs);
832 build_iovec(iov, iovlen, "hostname", nam, (size_t)-1);
833 /* Add mounted file system to PATH_MOUNTTAB */
834 if (!add_mtab(hostp, spec))
835 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
840 * Try to set up the NFS arguments according to the address
841 * family, protocol (and possibly port) specified in `ai'.
843 * Returns TRYRET_SUCCESS if successful, or:
844 * TRYRET_TIMEOUT The server did not respond.
845 * TRYRET_REMOTEERR The server reported an error.
846 * TRYRET_LOCALERR Local failure.
848 * In all error cases, *errstr will be set to a statically-allocated string
849 * describing the error.
852 nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec, char **errstr,
853 struct iovec **iov, int *iovlen)
855 static char errbuf[256];
856 struct sockaddr_storage nfs_ss;
857 struct netbuf nfs_nb;
858 struct nfhret nfhret;
860 struct rpc_err rpcerr;
862 struct netconfig *nconf, *nconf_mnt;
863 const char *netid, *netid_mnt;
865 int doconnect, nfsvers, mntvers, sotype;
867 enum mountmode trymntmode;
869 trymntmode = mountmode;
873 if (nfsproto == IPPROTO_TCP)
874 sotype = SOCK_STREAM;
875 else if (nfsproto == IPPROTO_UDP)
878 if ((netid = netidbytype(ai->ai_family, sotype)) == NULL) {
879 snprintf(errbuf, sizeof errbuf,
880 "af %d sotype %d not supported", ai->ai_family, sotype);
881 return (TRYRET_LOCALERR);
883 if ((nconf = getnetconf_cached(netid)) == NULL) {
884 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
885 return (TRYRET_LOCALERR);
887 /* The RPCPROG_MNT netid may be different. */
892 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
894 snprintf(errbuf, sizeof errbuf,
895 "af %d sotype SOCK_DGRAM not supported",
897 return (TRYRET_LOCALERR);
899 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
900 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
902 return (TRYRET_LOCALERR);
907 if (trymntmode == V4) {
909 } else if (trymntmode == V2) {
917 if (portspec != NULL) {
918 /* `ai' contains the complete nfsd sockaddr. */
919 nfs_nb.buf = ai->ai_addr;
920 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
922 /* Ask the remote rpcbind. */
923 nfs_nb.buf = &nfs_ss;
924 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
926 if (!rpcb_getaddr(NFS_PROGRAM, nfsvers, nconf, &nfs_nb,
928 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
933 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
935 clnt_spcreateerror("RPCPROG_NFS"));
936 return (returncode(rpc_createerr.cf_stat,
937 &rpc_createerr.cf_error));
941 /* Check that the server (nfsd) responds on the port we have chosen. */
942 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, NFS_PROGRAM, nfsvers,
945 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
946 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
947 return (returncode(rpc_createerr.cf_stat,
948 &rpc_createerr.cf_error));
950 if (sotype == SOCK_DGRAM && noconn == 0) {
952 * Use connect(), to match what the kernel does. This
953 * catches cases where the server responds from the
954 * wrong source address.
957 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
959 snprintf(errbuf, sizeof errbuf,
960 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
962 return (TRYRET_LOCALERR);
968 stat = clnt_call(clp, NFSPROC_NULL, (xdrproc_t)xdr_void, NULL,
969 (xdrproc_t)xdr_void, NULL, try);
970 if (stat != RPC_SUCCESS) {
971 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
976 clnt_geterr(clp, &rpcerr);
977 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
978 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
980 return (returncode(stat, &rpcerr));
985 * For NFSv4, there is no mount protocol.
987 if (trymntmode == V4) {
989 * Store the server address in nfsargsp, making
990 * sure to copy any locally allocated structures.
992 addrlen = nfs_nb.len;
993 addr = malloc(addrlen);
996 bcopy(nfs_nb.buf, addr, addrlen);
998 build_iovec(iov, iovlen, "addr", addr, addrlen);
999 secname = sec_num_to_name(secflavor);
1000 if (secname != NULL)
1001 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1002 build_iovec(iov, iovlen, "nfsv4", NULL, 0);
1003 build_iovec(iov, iovlen, "dirpath", spec, (size_t)-1);
1005 return (TRYRET_SUCCESS);
1008 /* Send the MOUNTPROC_MNT RPC to get the root filehandle. */
1011 clp = clnt_tp_create(hostp, MOUNTPROG, mntvers, nconf_mnt);
1013 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1014 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
1015 return (returncode(rpc_createerr.cf_stat,
1016 &rpc_createerr.cf_error));
1018 clp->cl_auth = authsys_create_default();
1019 nfhret.auth = secflavor;
1020 nfhret.vers = mntvers;
1021 stat = clnt_call(clp, MOUNTPROC_MNT, (xdrproc_t)xdr_dir, spec,
1022 (xdrproc_t)xdr_fh, &nfhret,
1024 auth_destroy(clp->cl_auth);
1025 if (stat != RPC_SUCCESS) {
1026 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
1031 clnt_geterr(clp, &rpcerr);
1032 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1033 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
1035 return (returncode(stat, &rpcerr));
1039 if (nfhret.stat != 0) {
1040 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1041 hostp, spec, strerror(nfhret.stat));
1042 return (TRYRET_REMOTEERR);
1046 * Store the filehandle and server address in nfsargsp, making
1047 * sure to copy any locally allocated structures.
1049 addrlen = nfs_nb.len;
1050 addr = malloc(addrlen);
1051 fhsize = nfhret.fhsize;
1052 fh = malloc(fhsize);
1053 if (addr == NULL || fh == NULL)
1055 bcopy(nfs_nb.buf, addr, addrlen);
1056 bcopy(nfhret.nfh, fh, fhsize);
1058 build_iovec(iov, iovlen, "addr", addr, addrlen);
1059 build_iovec(iov, iovlen, "fh", fh, fhsize);
1060 secname = sec_num_to_name(nfhret.auth);
1062 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1064 build_iovec(iov, iovlen, "nfsv3", NULL, 0);
1066 return (TRYRET_SUCCESS);
1070 * Catagorise a RPC return status and error into an `enum tryret'
1074 returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
1078 return (TRYRET_TIMEOUT);
1079 case RPC_PMAPFAILURE:
1080 case RPC_PROGNOTREGISTERED:
1081 case RPC_PROGVERSMISMATCH:
1082 /* XXX, these can be local or remote. */
1085 return (TRYRET_REMOTEERR);
1086 case RPC_SYSTEMERROR:
1087 switch (rpcerr->re_errno) {
1089 return (TRYRET_TIMEOUT);
1093 return (TRYRET_REMOTEERR);
1099 return (TRYRET_LOCALERR);
1103 * Look up a netid based on an address family and socket type.
1104 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
1106 * XXX there should be a library function for this.
1109 netidbytype(int af, int sotype)
1111 struct nc_protos *p;
1113 for (p = nc_protos; p->netid != NULL; p++) {
1114 if (af != p->af || sotype != p->sotype)
1122 * Look up a netconfig entry based on a netid, and cache the result so
1123 * that we don't need to remember to call freenetconfigent().
1125 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
1128 static struct netconfig *
1129 getnetconf_cached(const char *netid)
1131 static struct nc_entry {
1132 struct netconfig *nconf;
1133 struct nc_entry *next;
1136 struct netconfig *nconf;
1138 for (p = head; p != NULL; p = p->next)
1139 if (strcmp(netid, p->nconf->nc_netid) == 0)
1142 if ((nconf = getnetconfigent(netid)) == NULL)
1144 if ((p = malloc(sizeof(*p))) == NULL)
1154 * xdr routines for mount rpc's
1157 xdr_dir(XDR *xdrsp, char *dirp)
1159 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1163 xdr_fh(XDR *xdrsp, struct nfhret *np)
1166 long auth, authcnt, authfnd = 0;
1168 if (!xdr_u_long(xdrsp, &np->stat))
1174 np->fhsize = NFS_FHSIZE;
1175 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFS_FHSIZE));
1177 if (!xdr_long(xdrsp, &np->fhsize))
1179 if (np->fhsize <= 0 || np->fhsize > NFS3_FHSIZE)
1181 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
1183 if (!xdr_long(xdrsp, &authcnt))
1185 for (i = 0; i < authcnt; i++) {
1186 if (!xdr_long(xdrsp, &auth))
1188 if (np->auth == -1) {
1191 } else if (auth == np->auth) {
1196 * Some servers, such as DEC's OSF/1 return a nil authenticator
1197 * list to indicate RPCAUTH_UNIX.
1199 if (authcnt == 0 && np->auth == -1)
1200 np->auth = AUTH_SYS;
1201 if (!authfnd && (authcnt > 0 || np->auth != AUTH_SYS))
1211 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1212 "usage: mount_nfs [-23bcdiLlNPsTU] [-a maxreadahead] [-D deadthresh]",
1213 " [-g maxgroups] [-I readdirsize] [-o options] [-R retrycnt]",
1214 " [-r readsize] [-t timeout] [-w writesize] [-x retrans]",
1215 " rhost:path node");